| Basis on the present conditions and the development direction of the cooling system for greenhouse in our country, deeply analyzing a few cooling methods that wide used at present. In light of the enthalpy and wet peculiarity of atmosphere and the principle of cooling by evaporate, putting up a new cooling system for greenhouse in the high temperature and high wet distinct in summer - liquid dehumidifying and cooling system .This cooling system is a reform basis on the wet pad-breezing machine system, its cooling breadth is wider than of the wet pad-breezing machine system, its breadth can get about ten temperature. This thesis designs the liquid dehumidifying and cooling system, especially studying on the exploitation and rebirth for liquid desiccant. Analyzing the peculiarity of a few kinds of the desiccant from the economy and the utility, selecting the CaCl2 used in industry to use for the system.Under the situation of the climate in summer in WuHan, analyzing the temperature of the water in the flat model solar water heater by the experiment, and carrying on the simulating experiment for the rebirth of the CaCl2, by the simple and multiple factor analyzing, analyzing the influence of the factor such as the thickness and the temperature of the liquor, the area of evaporating and the time of the rebirth. The result manifests: on the same conditions, the higher thickness can get the slower velocity; the higher temperature , the bigger area and the longer time can get faster velocity, setting up the mathematical model by analyzing and disposing the data:y=376.83+0.077Z1-l237.5Z2-4.263Z3-8.457Z4+0.011Z1Z4+13.75Z2Z3+24.75Z2Z4+0.089Z3Z4 - 0.275Z2Z3Z4Z1 stand for the temperature (centigrade)Z2 stand for the original thickness of the liquor (percentage)Z3 stand for the time (minute)Z4 stand for the area of evaporating (centimeter)Through the test under real condition, the model provides some valuable theory and practical basis for the exploitation and rebirth for CaCl2.
|
PDF Full Text Request